14.29$ transaction fee is absolutely not normal thing.
I have no idea what kind of plan they have about it.
But the possible reason is so many block chain transaction has been stuck for
so many days.
Maybe this is the only reason not to let any small transaction through bitcoin address.
In this case, the best thing to do is to make a campaign to reduce the transfer fees. If there are many participants, the campaign will grow. With this campaign, Coinbase will have to lower fees. (I had to pay the same fee)